Add option to allow nodes to ignore the scale/rotation parts of their parents transformation.

ISceneNode::setUpdateAbsolutePosBehavior can now control what ISceneNode::updateAbsolutePosition really does.
Having only the position and not the rotation/scale of a child node affected by the parent transformation was previously impossible inside the scene-graph. So people always had to break the scene-graph and code it themselves.
Old behaviour is default. 
Extra check for new variable has a small cost, thought new behaviour can actually be faster when it's used.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6432 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/Irrlicht10.0.vcxproj

@@ -846,6 +846,7 @@
     <ClInclude Include="..\..\include\EMaterialTypes.h" />
     <ClInclude Include="..\..\include\EMeshBufferTypes.h" />
     <ClInclude Include="..\..\include\EReadFileType.h" />
+    <ClInclude Include="..\..\include\ESceneNodeUpdateAbs.h" />
     <ClInclude Include="..\..\include\EShaderTypes.h" />
     <ClInclude Include="..\..\include\fast_atof.h" />
     <ClInclude Include="..\..\include\IAnimatedMeshMD3.h" />

source/Irrlicht/Irrlicht10.0.vcxproj.filters

@@ -1441,6 +1441,9 @@
     <ClInclude Include="..\..\include\EMeshBufferTypes.h">
       <Filter>include\scene</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\ESceneNodeUpdateAbs.h">
+      <Filter>include\scene</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\changes.txt">